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egoroff_w [7]
3 years ago
5

If the volume of the pyramid is 72cm3, what is it’s height in cm? A.3. B.9. C.12. D.18

Mathematics
1 answer:
NikAS [45]3 years ago
3 0

Answer:

It A

Step-by-step explanation:

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8/t; t=4 rkrrkrkkrkrkrkrkr
Inga [223]

Answer:

yes 12

Step-by-step explanation:

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8 0
2 years ago
What is the volume of the composite figure with the dimensions shown in the 3 views? (Round to the nearest tenth)
givi [52]

Answer:

278.9 units^3 to the nearest tenth.

Step-by-step explanation:

This is a cylinder on the bottom . resting on the cylinder is a prism.

Volume of the cylinder = π r^2 h  where r = 1/2 * 7 = 3.5 and h = 6.

V = π * 3.5^2 * 6 = 230.907 units^3.

Volume of the prism = l*w*h

= 4*4*3 = 48 units^3.

Volume of the composite figure = 230.907 + 48

= 278.9.

6 0
3 years ago
Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial.
Anna007 [38]

The correct expression is (a) n = 100; (x + 10)^2

<h3>How to determine the value of n?</h3>

The expression is given as:

x^2 + 20x + n

Take the coefficient of x

k = 20

Divide by 2

k/2= 10

Square both sides

(k/2)^2 = 100

The above value represents the value of n

i.e.

n = 100

So, we have:

x^2 + 20x + 100

Expand

x^2 + 10x + 10x + 100

Factorize

x(x + 10) + 10(x + 10)

Factor out x + 10

(x + 10)^2

Hence, the correct expression is (a) n = 100; (x + 10)^2

Read more about trinomial at:

brainly.com/question/1538726

#SPJ1

7 0
2 years ago
the radius of a circular garden is 6 ft. if one foot of fencing cost 2.75 dollars, how much would you spend to completely surrou
PIT_PIT [208]

Answer:

103.67 dollars.

Step-by-step explanation:

The perimeter of the garden = 2 * π * 6 feet.

So the cost is 2.75 * 12π  dollars.

= 103.67 dollars.

3 0
3 years ago
Need help with #8 &amp; #14 PLEASE!!
juin [17]

Answer:

8 (see work)

14. 2x^2 -4x^2 +3

Step-by-step explanation:

There's attached work for explanation

8 0
3 years ago
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